BEGIN:VCALENDAR PRODID:-//Microsoft Corporation//Outlook 16.0 MIMEDIR//EN VERSION:2.0 METHOD:PUBLISH X-MS-OLK-FORCEINSPECTOROPEN:TRUE BEGIN:VTIMEZONE TZID:Central Standard Time BEGIN:STANDARD DTSTART:16011104T020000 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZOFFSETFROM:-0500 TZOFFSETTO:-0600 END:STANDARD BEGIN:DAYLIGHT DTSTART:16010311T020000 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZOFFSETFROM:-0600 TZOFFSETTO:-0500 END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT CLASS:PUBLIC CREATED:20220912T205322Z DESCRIPTION:Speaker:\nJoshua B. Plotkin - Annenberg Professor of Natural Sciences\, University of Pennsylvania\n\nTitle:\nMeasuring evolutionary forces of cultural change\n \nAbstract:\nI will describe how to measure forces driving cultural change \, using inference tools from evolutionary theory. We study time series da ta from large corpora of parsed English texts to identify what drives lang uage change over the course of centuries. And we measure frequency-depende nt effects in time-series of baby names and purebred dog preferences over the past century. The negative frequency dependence we infer among names e xplains their diversity patterns\, and it replicates across the United Sta tes\, France\, Norway and the Netherlands. We find different growth rates for male versus female names\, attributable to different rates of innovati on\, whereas biblical names enjoy a genuine selective advantage at all fre quencies. Frequency dependence emerges from a host of underlying selective mechanisms\, including a preference for novelty that recapitulates boom-b ust fads among dog owners. Analyzing cultural evolution through frequency- dependent selection provides a quantitative account of social pressures to conform or to be different.\nSpeaker Bio:\nJoshua Plotkin uses mathematic s and computation to study questions in evolutionary biology and ecology. Research in the Plotkin group is concerned primarily with adaptation in p opulations. Related interests include the evolution of robustness and adap tability\, the evolutionary ecology of viral populations\, the evolution o f cooperation\, conflict\, coalitions\, and group decision-making. \nLocat ion:\nIn person: Chambers Hall\, 600 Foster Street\, Lower Level\nRemote o ption: \nPasscode: NICO 22\nAbout the Speaker Series:\nWednesdays@NICO is a vibrant weekly seminar series focusing broadly on the topics of complex systems and data science . It brings together attendees ranging from graduate students to senior fa culty who span all of the schools across Northwestern\, from applied math to sociology to biology and every discipline in-between. Please visit: htt ps:// for information on future speakers.\n DTEND;TZID="Central Standard Time":20221102T130000 DTSTAMP:20220912T205322Z DTSTART;TZID="Central Standard Time":20221102T120000 LAST-MODIFIED:20220912T205322Z LOCATION:In person at Chambers Hall\, or remote via Zoom PRIORITY:5 SEQUENCE:0 SUMMARY;LANGUAGE=en-us:Wed@NICO\, 11/2\, Joshua B. Plotkin TRANSP:OPAQUE UID:040000008200E00074C5B7101A82E0080000000010920DD5BBC6D801000000000000000 0100000008462CFD6BD6194408F81D681E87BE2B5 X-ALT-DESC;FMTTYPE=text/html:< !--[if gte mso 10]>